Charmonia and Bottomonia in asymmetric magnetized hot nuclear matter

Abstract

We investigate the mass-shift of $P$-wave charmonium (${{\chi }_c}_0$, ${{\chi }_c}_1$) and $S$ and $P$-wave bottomonium (${\eta }_b$, ${\rm Y}$, ${{\chi }_b}_0$ and ${{\chi }_b}_1$) states in magnetized hot asymmetric nuclear matter using the unification of QCD sum rules (QCDSR) and chiral $SU(3)$ model. Within QCDSR, we use two approaches, $i.e.$, moment sum rule and Borel sum rule. The magnetic field induced scalar gluon condensate $⟨\frac{{\alpha }_s}{\pi }{G}_{\mu \nu }^a{G^a}^{\mu \nu }⟩$ and the twist-2 gluon operator $⟨\frac{{\alpha }_s}{\pi }{G}_{\mu \sigma }^a{{G^a}_{\nu }}^{\sigma }⟩$ calculated in chiral $SU(3$) model are utilised in QCD sum rules to calculate the in-medium mass-shift of above mesons. The attractive mass-shift of these mesons is observed which is more sensitive to magnetic field in high density regime for charmonium, but less for bottomonium. These results may be helpful to understand the decay of higher quarkonium states to the lower quarkonium states in asymmetric heavy ion collision experiments.

arXiv comment30 Pages and 10 figures

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Cited by in corpus (7)

• A review of quarkonia under strong magnetic fields
• Analysis of pseudoscalar and scalar $D$ mesons and charmonium decay width in hot magnetized asymmetric nuclear matter
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• Relativistic dynamics of charmonia in strong magnetic fields